The total number of cohesive chains in each text was counted based on the Referential Cohesion Analysis table (see, e.g., Appendix I – RCA Table) constructed for each text. The number of chains was counted according to the number of columns, which is identical with the total number of main referents in the text, represented by the presupposed items (indicated in blue in the tables). The total number of ties was counted by subtracting the number of presupposed items from the total number of items in the table. Briefly, the ratio of cohesively used reference items is lowest in RAs. This is in line with Myers’ observation (as cited in Károly, 2007, 86) that academic papers are more likely (than popular scientific articles) to use lexical repetition instead of pronouns or demonstratives with synonyms for reference.